In tennis, when the player serving the ball serves the ball out of bounds they get to attempt a second and final serve. Knowing that they will get a second serve, the first serve is often made as hard a possible (called a blast), even though such a serve lands in bounds only 60% of the time. When the blast first serve is in, they win the point 80% of the time. When the first serve is out, their gentler second serve wins the point 45% of the time. Use a tree diagram representing the probabilities of winning the point for the first two serves to determine the probability that the server eventually wins the point when their first serve is a blast.